Fix Gerrit cmake build of Zooshi.

Wasn't finding fplutil with the Gerrit directory structure.

Deprecated functions in Firebase were generating warnings, which in turn were being considered errors.
PiperOrigin-RevId: 148263810
Change-Id: Id97f381997fb41b05d0fb7f3c694ac592fa0cc5a

Author: jsanmiya

cmake/find_fplutil.cmake

@@ -21,6 +21,7 @@ set(fplutil_dir_possibilities
     "${dependencies_fplutil_dir}"
     "${fpl_root}/fplutil"
     "${CMAKE_CURRENT_SOURCE_DIR}/dependencies/fplutil"
+    "${CMAKE_CURRENT_LIST_DIR}/../../../libs/fplutil"
     "${CMAKE_CURRENT_LIST_DIR}/../../fplutil"
     "${CMAKE_CURRENT_LIST_DIR}/../../../fplutil"
     "${CMAKE_CURRENT_LIST_DIR}/../../../../fplutil"